David Tennant, 33, recently starred in Casanova - a BBC drama based on the legendary lothario written by Russell T Davies, the lead writer in the latest series of Doctor Who.

The actor from Bathgate, West Lothian, also took major roles in BBC shows Blackpool and He Knew He Was Right, appeared in the Stephen Fry movie Bright Young Things and on stage in the Royal Shakespeare Company's Romeo and Juliet.

He plays Barty Crouch Jr in Harry Potter and the Goblet of Fire, currently in production.

A long-time fan of Doctor Who, Tennant voiced a role in internet episode Scream of the Shalka in 2003 and told the Guardian newspaper that his earliest memory was of seeing Doctor Who actor Jon Pertwee regenerate into Tom Baker.

Richard E Grant, 47, played the role of Doctor Who in the 2003 internet episode Scream of the Shalka.

Best known for playing alcoholic actor Withnail in 1987 film Withnail and I, Grant's big screen credits include Gosford Park, Hudson Hawk and a role alongside David Tennant in 2003's Bright Young Things.

Grant was also one of numerous actors to play the part in the spoof Doctor Who adventure, The Curse of Fatal Death, in aid of Comic Relief in 1999.

He appears in the John Malkovich film Colour Me Kubrick, currently in post-production, and is voicing a part in Tim Burton's next movie Corpse Bride.